Chair frame assembly



FIG. 1 is a front perspective view of a chair frame showing my design;

FIG. 2 is a front elevational view;

FIG. 3 is a side elevational view;

FIG. 4 is a top plan view;

FIG. 5 is a bottom plan view; and

FIG. 6 is a rear elevational view thereof.

The dot-dash lines of FIGS. 1, 2 and 6 have been shown for illustrative purposes only. 

The ornamental design for a chair frame assembly, as shown and described. 